What would happen without excretory systems in humans?
a) wastes would build up in blood and damage the body.
b) blood would not circulate through the body.
c) oxygen would not enter the blood stream.
d) nutrients would not be absorbed.

this is math not biology xd

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.